The main aim of ‘Earth Summit’ organised at Brazil was
To think over ozone layer depletion in stratosphere
To increase oxygen in atmosphere
To encourage agriculture
To use solar energy
E.P. Odum is a leading
The equilibrium of the species is disturbed by
Give scientific reasons : Coral reefs not found in the regions from west Bengal to Andhra Pradesh but are found in Tamil Nadu and on the east Coast of India.
Cuscuta is an example of
Which biological factor is responsible for poor vegetation in deserts